//returns the filepath of a resource
static ALLEGRO_USTR *_get_resource_filepath(const ALLEGRO_USTR *skin_filepath, const char *resource_filename) {
ALLEGRO_USTR *result;
int pos, end_pos;
ALLEGRO_USTR *temp;
ALLEGRO_USTR_INFO temp_info;
//duplicate the resource filepath in order to replace '\' by '/'
result = al_ustr_dup(skin_filepath);
//replace '\' with '/'
al_ustr_find_replace_cstr(result, 0, "\\", "/");
//find the end of the string
end_pos = al_ustr_size(result);
//find the last occurrence of '/'
pos = al_ustr_rfind_chr(result, end_pos, '/');
//find the position after the '/'
pos += al_utf8_width('/');
//the replace function needs a ustr
temp = al_ref_cstr(&temp_info, resource_filename);
//replace the string after the '/' with the resource filename
al_ustr_replace_range(result, pos, end_pos, temp);
return result;
}
/* Test al_ustr_replace_range. */
static void t44(void)
{
ALLEGRO_USTR *us1 = al_ustr_new("Šis kungs par visu samaksās");
ALLEGRO_USTR *us2 = al_ustr_new("ī kundze");
CHECK(al_ustr_replace_range(us1, 2, 10, us2));
CHECK(0 == strcmp(al_cstr(us1), "Šī kundze par visu samaksās"));
/* Insert into itself. */
CHECK(al_ustr_replace_range(us1, 5, 11, us1));
CHECK(0 == strcmp(al_cstr(us1),
"Šī Šī kundze par visu samaksās par visu samaksās"));
al_ustr_free(us1);
al_ustr_free(us2);
}
/* Test al_ustr_replace_range (part 2). */
static void t45(void)
{
ALLEGRO_USTR *us1 = al_ustr_new("abcdef");
ALLEGRO_USTR *us2 = al_ustr_new("ABCDEF");
/* Start1 < 0 [not allowed] */
CHECK(! al_ustr_replace_range(us1, -1, 1, us2));
/* Start1 > end(us1) [padded] */
CHECK(al_ustr_replace_range(us1, 8, 100, us2));
CHECK(0 == memcmp(al_cstr(us1), "abcdef\0\0ABCDEF", 15));
/* Start1 > end1 [not allowed] */
CHECK(! al_ustr_replace_range(us1, 8, 1, us2));
CHECK(0 == memcmp(al_cstr(us1), "abcdef\0\0ABCDEF", 15));
al_ustr_free(us1);
al_ustr_free(us2);
}